when you talk about mass production, how many tape outs are expecting before sending the chips to your sponsors? how can we be sure the chips have a proper ESD strategy or are not weak to typical electrical over stresses?
Open-V: The World's First Open Source RISC-V-based 32-bit Microcontroller
11–20 of 21 posts
Re: Open-V: The World's First Open Source RISC-V-based 32-bit Microcontroller
#12Most of dev boards for hobby-end microcontrollers in the market are using high level language to easy the micro programming, is any high level language such as C supported?
C is supported. We are using the riscv.org toolchain considering that the micro has a RV32IM set. An arduino bootloader will make the micro Arduino-compatible .
Re: Open-V: The World's First Open Source RISC-V-based 32-bit Microcontroller
#13Hopefully they have something like the modern micros which includes USB interfaces onchip...
The current measured chip v.1 of the Open-V has not USB PHY. We are using a USB-to-SPI cable to program the micro. However, we are developing a low-speed USV PHY: PCS and PMA; and also a high speed PHY USB3.1 https://twitter.com/onchipUIS/status/787124721955508224. We are hoping to tapeout soon the USB PHYs to see feasibility inclusion for Open-V v.2.
Re: Open-V: The World's First Open Source RISC-V-based 32-bit Microcontroller
#14when you talk about mass production, how many tape outs are expecting before sending the chips to your sponsors? how can we be sure the chips have a proper ESD strategy or are not weak to typical electrical over stresses?
We have now a first prototype, fully tested, so, with this campaign we expect to improve our first version but both chips will be available. We use ESD protections structures provided by the foundry.
Re: Open-V: The World's First Open Source RISC-V-based 32-bit Microcontroller
#15Great initiative but worrysome execution. Can the team share why we can't buy chips in lots of 100, 1k or even 1M chips? $500k isn't enough for TSMC, so who'll pay them? The ESP32 seems to have a much, much stronger story.
It is all about economies of scale, price will come down eventually. They have a reward with 15 chips per 199 + dev board. That goes $100/15 per chip.
Re: Open-V: The World's First Open Source RISC-V-based 32-bit Microcontroller
#16Great initiative but worrysome execution. Can the team share why we can't buy chips in lots of 100, 1k or even 1M chips? $500k isn't enough for TSMC, so who'll pay them? The ESP32 seems to have a much, much stronger story.
Analog IPs are one of the most expensive part of the design. I hope these IPs will be free. Is there any voltage regulator?
Re: Open-V: The World's First Open Source RISC-V-based 32-bit Microcontroller
#17Great initiative but worrysome execution. Can the team share why we can't buy chips in lots of 100, 1k or even 1M chips? $500k isn't enough for TSMC, so who'll pay them? The ESP32 seems to have a much, much stronger story.
In the campain site they commented about getting an MPW and 70k chips. It seems like they are prototyping and getting some few number of wafers to get TSMC into it. The coolest thing is that they mentioned in http://hackaday.com/2016/11/22/mrisc-v-the-first-open-source... comments that they will release chip schematics.
Re: Open-V: The World's First Open Source RISC-V-based 32-bit Microcontroller
#18Great initiative but worrysome execution. Can the team share why we can't buy chips in lots of 100, 1k or even 1M chips? $500k isn't enough for TSMC, so who'll pay them? The ESP32 seems to have a much, much stronger story.
Analog IPs are one of the most expensive part of the design. I hope these IPs will be free. Is there any voltage regulator?
I read in hackaday that Analogs IP will be open, But I couldn't find anything about voltage regulators.
Re: Open-V: The World's First Open Source RISC-V-based 32-bit Microcontroller
#19Getting 160MHz makes things more expensive, technology wise. Why not starting in a cheaper technology to be open source?
Good point. We are trying to cover some mid-end apps too. Basically the reason is we are planning to implement some functionality on-the-chip, such as a USB 3.1 PHY which requires a decent tech.
Re: Open-V: The World's First Open Source RISC-V-based 32-bit Microcontroller
#20Getting 160MHz makes things more expensive, technology wise. Why not starting in a cheaper technology to be open source?
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